With our 3 Google Developer Days in Munich, Moscow and Prague last month, we wrapped up “GDD season” this year. It was great to meet many of you in person, and we’re happy to see all of the positive responses via your tweets and blog posts. Participating in the events was a great way to update you on where we are in our product development as well as to hear your feedback.

Here is a 3-minute highlights video and a short summary of each of our Google Developer Day events. For all photos and videos, see here.

Sep 28, Tokyo: Japan is the 2nd largest country for Android app uploads and App Engine usage, so we were happy to meet and thank the strong developer communities there. We hosted our largest Developer Day in Tokyo, with 1,500 developers in Tokyo and 200 developers at a satellite venue in Kyoto. Our developer sandbox had over 30 booths with 90 developers, from the Android-based Android robot to the Android Developers' Club, which presented more than 100 Android applications by its members. See youtube.com/GoogleDevelopersJa for videos of all sessions.

Oct 29, Sao Paulo: Mario Queiroz, VP Product Management, opened the day for Brazil’s 4th Google Developer Day with the announcement that Jambool will now provide payments support for Orkut, and we announced that Brazil is our second largest country in number of Chrome users. As Voice Search and Navigation for Android launched just the day before, we demoed live during the keynote, including a daring and successful voice search query, “number of people who attended the Bon Jovi concert”. We hosted 1300 developers throughout the day to packed sessions. See keynote video, photos and presentation slides (linked from each session page).

Nov 9, Munich: For the first time, we organized Google Developer Day in partnership with the Technical University of Munich, who co-hosted their own sessions and ran an Innovation Sandbox throughout the day. 1200 developers were in attendance, and we met with one of our most active GTUG communities, with 11 locations in Germany and 21 events in the last six months. We treated ourselves to beer & pretzels and watched the Blinkendroid team put together 72 Android devices, the highest number yet. See our highlights video and photos.

Nov 12, Moscow: This year we reduced the number of simultaneous tracks from 6 to 4 to help developers choose between sessions. After a great keynote, 1300+ developers from over 85 cities attended 24 different sessions, 2 project showcase sessions, and participated in countless discussions, including one with a Duma member and Skolkovo advisor. The local GTUG also hosted two hackathons - one focused on Android & Chrome/HTML5, and one focused on Google Maps. Here are the highlights video, photos and PDFs (linked from each session page).

Nov 16, Prague: Bringing almost 1000 Czech & Slovak developers together, the third GDD in Prague was the biggest yet. We loved how much local stuff was happening there! The local Google User Group hosted a mini-barcamp onsite and launched an internet TV station (gug.tv) during the event, developers competed in a QR hunting game, and much more. Almost every link regarding the event (including the YouTube playlist) was compiled by the community into this freely editable Google Doc.

While we have great fun at these events, and love interacting with local developers, we’re usually only in town once or twice a year. However, there are vibrant developer communities all over the globe that meet regularly to discuss and hack on all the technologies showcased at Developer Day. To get involved, find a local group near you, or start up your own!

Finally, based on the interest we saw from previous developer events, we created some digital “souvenirs” for you in the form of PC & Mac wallpapers and an Android live wallpaper.